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1.The strain in member AB was measured to be 8.9*10-4. If the member is an L3*2 1/2* 1/4 of A36 steel determine the following:
a) What is the change in length in inches?
b) What is the force in the member?
2.Laboratories containing dangerous materials are often kept at a pressure slightly less than ambient pressure so that contaminants can be discharged through an exhaust system rather than leaked through cracks and around doors to other parts of the building. If the pressure in a laboratory is 0.1 inch of water below that of a hallway, with what velocity will air enter the room under the laboratory door? Assume viscous effects are negligible.
The train is travelling at 0.8 m/s i relative to a man on the side of the tracks. What is the speed of the bug as seen by the man at the side of the tracks? What is the speed of the train relative to (or as seen by) the bug?
Given the data , design a section of sanitary sewer to carry these flows at minimum velocity of 2.5 fps. Assume that the minimum depth of the sewer below the street must be 8.5 ft and that an n value of 0.013 is applicable.
At compressor exit, the specific entropy is the same as that at the inlet, and the pressure is 60 psia. Determine the R-134a exit temperature and the change in the enthalpy of R134a.
How many pounds of sulphur would be emitted from coal-fired power plants in the united states in 3 years. (each year. U.S electricity production in about 0.28 x 1012 watts, and coal has an energy content of about 30 x 106 J/kg
A street car line on the center of an 80 ft street makes a 75degrees 24' turn into another street of equal width. Thecorner curb line has R=12 ft. What's the largest R that canbe given a circular curve for the tract center line if the law requires it..
A force is specified by the vector F = [(10)i + (150)j + (-50)k] N. Calculate the angles made by F with the positive x-, y-, and z-axes
A bonfire emits CO at a rate of 30 g/s on a clear night (very stable conditions, Class F). The wind is blowing at 2 m/s at the effective stack height of 6 m. a. You have found a great place to pitch your tent 200 m directly downwind of the fire
Write a paper on steel sustainability.
The ball at A is kicked such that theta=30 degrees. If it strikes the ground at B having coordinates x=15 ft, y= -9ft, determine the speed at which it is kicked and the speed at which it strikes the ground.
When measuring a distance AB, the first taping pin was placed 1.5ft to the right of line AB and the second pin was set 1.5 ft left of line AB. The recorded distance was 236.89 ft. ( Assume 3 taped segments, the first two 100 ft each.)
The density of oil is 0.7 g/cc, the density of water is 1.0 g/cc, the radius of capilary is 0.008 cm, the contact angle through water is 58, the interfacial tension is 50 dynes/cm. Calculate the height in cm
A Rankine cycle has a boiler pressure of 2500 psi and a condenser pressure of 1psi. The temperature at the inlet of the turbine is 800F. The turbine has an isentropic efficiency of 90 percent and the pump operates isentropically.
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